64-bit ActivePython build on Mac
requires a 64-bit Tcl/Tk 8.5+ to function properly. If you are on
Leopard, you will have to install ActiveTcl 8.5 (i386) and launch
Python as arch -i386 python to use Tkinter. On Snow Leopard,
ActivePython uses Apple's Tcl/Tk. Also see the FAQ.